nyc·ta·lo·pi·a 
(nĭk′tə-lōpē-ə)
(nĭk′tə-lōpē-ə)n.
See night blindness.
[Late Latin nyctalōpia, from Greek nuktalōps, night-blind : nux, nukt-, night; see nekw-t- in the Appendix of Indo-European roots + alaos, blind + ōps, ōp-, eye; see okw- in the Appendix of Indo-European roots.]
nyc′ta·lopic (-lōpĭk, -lŏpĭk) adj.